The end is in sight! Windows 10 will be released on July 29 as a free download for anyone running Windows 7, Windows 8, or Windows 8.1; the free update will be available for a year. If you aren't eligible for the free upgrade (perhaps your one of the many still running Windows XP) you can also pick up individual licenses. Windows 10 Home will set you back $119, and Windows 10 Pro will cost you $199.
Here at San Diego Computer Help, we always recommend backing up your system prior to any major changes in Hardware or Software. If you don't have a backup system, or are just uneasy upgrading your PC to Windows 10 yourself, give us a call at (619) 363-5325 and we'll be more than glad to assist you remotely or on-site!