The HOA is very important to research for any purchase specifically FHA financing. You should ask:
-What the owner occupancy percent is within the complex? (Usually 75% is the minimum in my experience lender will accept, 80% I believe is the min. for FHA)
-Is there any litigation against the complex?
-What the dollar amount is of the reserves?
These are all question your lender will ask for. Also for FHA financing you should ask if they are FHA approved or else you will need a spot approval. Sometimes, HOA's will not release this information to buyers or buyer's agents but you can have the listing agent or sellers contact the HOA.