I'm totally new to WP - a bit of background - I have WP installed currently for a class I'm taking, but I currently use it with MAMP. There have been many issues thus far with MAMP, so I would prefer to leave that current WP install alone and just install it again for non-class related things.
1. Can I install two versions of WP and leave the current "MAMP version" as is, while using the "live WP" version"?
2. I have two ideas that I would like to pursue: a.) a real estate site, and b.) a fitness site. I'm trying to decipher the semantics of multi-user and multi-site (forgive my lack of knowledge). Do I only install the multi-user database once?
I understand that the manuals are probably clear for someone who has a bit more background, but for me they are a bit unclear. Just looking for some clarification. Thanks for your time and assistance.