I cant speak to thier credibility and I'm not prepared to vouch for them at this early stage.

I was wondering if anyone knew of good online resources or message boards so I could ask some generic user questions (Ex. can you import a journal entry from excel into Yardi) and best-use practices.

This demeanor comes across as very credible too... and the biggest reason we get our contracts signed...

As an 18 year old just starting out in wholesaling, how could I build my credibility so sellers and buyers feel more comfortable and trust me when selling/ buying a home?

Hello All,I have a home that we are ready to sell, due to ROI and life.Home Value is $225KMortgage is $93KRent is $1100Area rent ave is $1100-$1250Things to consider-Current tenants have been excellent renters for the past 5 years.

To add to Alex's excellent posts be also on lookout for polybutylene piping in houses. 

This calculator would be an excellent tool in learning to run these numbers.  

And backed by his/her credibility, raising capital from banks and private investors become a whole lot easier vs. you doing it by yourself.For example, last Friday, a "newbie" (he is an experienced apartment investor but he has not done a development project before) showed me 3 buildings in downtown Cincinnati owned by a billionaire.

They're thorough, excellent.

This book is an excellent parable about how you can get journey through real estate with taking small steps and actions. 6) Set For Life - While not exactly real estate related it is a fantstically motivating book about steps you can take in your personal life to improve your finances if you're serious about getting on the journey (it takes years) to achieving financial security and independence. 7) DelREIA Facebook Page - Because you want to invest in Delaware specifically it can be a good resource for specific things about laws, recommendations, and referrals.