Hi Juan you're welcome! There's a lot to learn in this hobby. I have been in the saltwater hobby for 14 years now and still to this day I find that I am always learning new things. A tip that I have for adding fish that you're interested in getting for your tank would be to use a website such as
Live Aquaria (Click The Link) as a reference guide for researching a specific fish's temperament and I would start by adding the "Peaceful" fish first and leave anything labeled as "Semi-Aggressive" for last. The reason is that usually Semi-aggressive fish that are the first to be added to the tank typically tend to become territorial of their spot in the tank or some cases the entire tank which will result in nonstop bullying and nipping at other fish. Hope this helps! It's helped me in my personal experience.
Keep up on those weekly water changes too! they help tremendously for your water column. As for your clownfish not hosting the anemone yet just give it all the time it needs lol. Unfortunately, that one is just a mandatory waiting game all of us reefers have to abide by lol. A trick that some hobbyist have had success with when it comes to dealing with aggressive fish bullying other livestock in their tank is to take a mirror or the mirror side of an old CD and tape the mirror side on the tank where the aggressive fish usually hangs out at and that will usually result in the aggressive fish attempting to fight itself in the mirror. Now I don't exactly know the science behind the method but what seems to happen is the fish will constantly tire itself out and realize nothing is working and you should begin to notice an overall change in its behavior towards the other tankmates. Personally never had to do this but I've heard from other reefers who tried this with their problem fish and have had success. Always worth a shot before sending him back to the LFS!