Ok.
1. Buy a UPS, even if you DON'T have frequent power interruptions where you work. Brownouts are silent killers, that can do more harm than power outages. Invisible spikes and troughs, are just as bad. If the "factory" or "autoshop" next door uses large electrical motors, you may never notice the brownouats or troughs. Buy a UPS, to condition your operating power, and THEN if you DO have frequent power losses, you're that much farther ahead.
2. Set your AUTOSAVE feature to some time YOU feel comfortable with. For my newer users I'll have them set to every 10 minutes or so. Some of my remote users have multiple power issues in a day, they sometimes set to even more frequent than that !
Here's how: RIGHT-CLICK in the command prompt area, choose "Options" from your popup menu & choose the "Open and Save" tab. Look halfway down the left side. Set it to any minutes between saves you want. As you gain experience, you MAY back off on this, or you may not. If you have REALLY HUGE files, say 100-250Mb or larger, you may want to save a little less frequently, but if you're using a modern computer with reasonable specs, even that shouldn't be an issue. To find an AutoSAVED file, I think you'll do a search for "SV$" files, and rename the file extension from SV$ to DWG. Its a drawing again. This is if you don't have a BAK file to fall back on, which you may not if you haven't developed a rhythm for your manual saves yet. We all do at some point; you will too !
Good luck !