Many folks here are very helpful with localhost questions. The problem is they are sprinkled all over the forum. This section consolidates those (hopefully) and gets quicker, better answers.
If your install is multisite, I would tag it accordingly. Also, please tell os what software you use to run the install - Xamppp, Mamp, Wamp, etc. The more details on the set up, the better the help.
Also, if you just have questions before committing to a localhost install - feel free.
I will close this topic, but if any mods want to add to it, feel free to open and do so.