Here is a link to a Microsoft SharePoint Training.

The SharePoint homepage is your place to find SharePoint sites and portals, read news, or look up content. News from sites highlights updates from sites you follow or visit often. Frequent sites shows sites you like to go to and recent activity. Suggested sites appear based on recent searches you've done and recommendations from the Microsoft Graph. Note: Microsoft Graph must be enabled by your admin to see featured content and suggested sites on your SharePoint homepage. To search for a site, file, or person across your company, type it in the search box and select it from the results to open and view it. To follow a SharePoint site, go to where it is, and select the star  next to the site's name. Note: Once you follow a SharePoint site, it'll appear in your Following section. Following shows all the sites you follow, such as your team site or a site from another group you work with. Recent highlights any SharePoint sites you've gone to recently. Featured links displays sites your company wants to spotlight. Source: Microsoft

With the SharePoint Mobile app for iOS and Android, you can stay connected to your team's news, sites, and important links — even when you're on the go. Find tab Quick access: See your most recent content and people. Frequent sites: Discover frequently visited sites. People: See those that you work with. Recent files: Access your recent files. Featured links: Explore important links set up by your organization. Search bar Enter a search term to find additional people, files, news posts, or sites. News tab The News tab lets you browse previews of your team's latest news posts. Tap a preview to read the full news post, see how many likes and views it has, and add your own comments. Tap the Bookmark icon at the top of a news post or a modern page to save it. Me tab The Me tab lets you find your saved content or see your profile. Tap Recent to browse your recent items. Tap Saved to see the news posts, pages, and files you've saved and set aside. Source: Microsoft

Create a team site to connect people on a team, or create a communication site to reach a broader audience across your company. From your SharePoint Online homepage, select + Create site. There are 2 site options to choose from: Team site Collaborate on projects Read team-related news Stay on track with a shared calendar and managed tasks Communication site Share news or information broadly Engage with a large audience Use modern, visual layouts Note: Although there are 2 site options to choose from, the rest of this lesson describes how to create a Team site. Select Team site. Type in a site name and see if it's available. Note: A corresponding Office 365 group is created with every team site in Office 365 so there's no need to make an email distribution list. Anyone can contact your entire team with this email address. Type in a description for your site. Select a privacy setting and then select Next. Add additional site owners and group members as needed. Select Finish. Source: Microsoft

Use, filter, and update lists in SharePoint Online to keep your team on track and organized. Filter a list In the list you want to filter, select Open the filters pane . Select how you want to filter your list from the options available. Note: After you've filtered a list, a funnel icon appears next to a column header to show that the list is currently filtered. Clear a filter Select Clear filters from the filters pane. Edit a list item Select Open the details pane . Make changes to your list item and the updates will automatically appear. Source: Microsoft

Add news to your team site to keep everyone informed, or remove a post to manage content. Add a news post From your team site, select + Add. To create your news post, type in a headline or select Add image to put in a background photo. Go to where your picture is, select it, and then select Open. To set the photo's focus point, select it and then drag up or down to position it. Select the plus sign  to add a section or web part to your post. Select a web part to use, and then select Publish. To see the post on your team site, select Home. To see the post on yoru SharePoint homepage, select SharePoint. Note: It may take some time for your news post to appear on your SharePoint homepage. Remove a news post Note: Your admin must give you permission to remove a news post. To remove a news post on your site, select Pages. Choose the post you want to remove -- a green checkmark  appears when it's selected. Select Delete and then select Delete once more to confirm the deletion. Source: Microsoft

Add web parts to your page and share ideas through text, video, images, and more. Add columns to a page Select Edit section. Choose a column layout. Add additional web parts Move your pointer to where you want another web part to appear, and select the plus sign. Select the double-headed arrow to expand the tool box and see more options like Bing maps, File Viewer, and Office 365 video. To find a specific web part, type it into Search. Source: Microsoft

A SharePoint team site connects you and your team to the content, information, and apps you need. Homepage See News for the latest happenings with your team, such as news posts, information, and updates. Select Add if you'd like to create a news post. When someone adds or edits a file, page, or list, Activity lets you see this at a glance. If you have permission to edit your site, select New to add a List, Document library, Page, News post, or App to your site. Left navigation pane Use Search to look for files on the site. View and engage in ongoing Conversations with your team. Store and share files in Documents — a default document library for your team. Manage your site with Pages or Site contents. Source: Microsoft

In a SharePoint document library, create a new file, upload your own, and then share it with others. Create a file To create a new file, select New and the file type you want. When the new file opens in your browser, add text, images, and more to your file and it'll automatically be saved to the document library. Select the site name to see the new file in your document library. Upload a file From your computer, select the file you want and then hold down your mouse to drag and drop it into the document library. Share a file Select the file you want to share so a green checkmark appears. Select Share. Select an option to share your file: Add the emails of people you wish to share your file with. Type in a message, and then select Send. Copy Link creates a direct link to the file that you can share in an email or IM. Outlook opens up your Outlook app with your file attached to a new email. Source: Microsoft

Sync the files in your Office 365 or SharePoint site libraries so they’re always available on your computer, even when you’re offline. Set-up sync On the SharePoint site that you want to sync files from, click Sync. Note: If your browser asks for permission to use OneDrive, confirm that it's OK. Sign in to OneDrive to start syncing your files and finish OneDrive setup. Work with your files in your file system Once synced, your SharePoint files appear in File Explorer under the name of your organization, or in Mac Finder if you're using a Mac. Each location will appear in a separate subfolder. Copy or move files from your computer to SharePoint right from your file system. To check the status of your files, add an account, or manage other sync settings, click the OneDrive cloud icon in the Windows notification area. Source: Microsoft