Request your VA certification online now.  

You also want a RE lawyer who doesn't suggest only forming an LLC by filing a certificate of formation only.

hi marcus. yes, filters need to be changed often. in fact, i recommend at least once a month, depending on the location of your furnace and cold air return system. that being said, here is my experience and expertise. ( i just competed getting my certification in furnace repair). the purpose of the cold air and fan are to circulate the hot air to the area where heat is needed. but the purpose is also to cool the heat exchanger in the furnace as well. the heat exchanger is a sealed system of pipes that the heat created by the burners heats up. the air from the fan/ cold air return blows passed the heat exchanger to circulate the heat to other areas and to cool the heat exchanger. if the filter is clogged, no air gets past the heat exchanger and consequently, the heat exchanger will overheat and get damaged. i have personally seem the heat exchanger with massive holes in it due entirely to a clogged filter. it is highly unlikely that your heat exchanger inside is full of dirt, but the fan and area around the heat exchanger could be filthy

Should I shoot towards a specialty certification in a certain field?  

He says there are some certifications out there but none of them are required.

You have to have a resale certificate from the state.  

And @Ned Carey is correct in Florida, most counties sell their certificates at auction for the amount of taxes, interest earned and fees. 

i recently took up a certification program to be a hard money broker offer commercial finance solutions with them. can't find them anywhere on Google or BBB, just advisors on social media

You have a tax lien certificate.

He also emailed me a list of unpublicized fees that I would be responsible for near closing time on top of the 25% down payment such as: Loan Fees Application Fee: $350.00 (due at time of application) Processing: $498.00 Underwriting: $195.00 Appraisal: $350.00 Flood Certification: $11.50 Credit Report: $27.50 Tax Service: $57.00 Rehab Fee: $500.00 Total Fees: $1,989 That would have been a $2,000 headache if I would have found out about these fees on the day of closing....