Wall o' text:
Does anyone know if I will be able to make it for that soon after I fill out my application?
Aquila is right, that will depend on the center(s), but unfortunately you can't find that out until your application is finished.
Another thing I came across that I am worried about is that I need to provide "Evidence of how your trip is to be funded", I take it they mean my plane ticket back to the UK. How would I show this as I can't purchase the ticket until I know when I can leave? Also I have no credit card, or bank account, the reason my husband had to send me the money through my friends Paypal. If I don't include this information is my Visa going to be denied?
That's actually not your plane ticket, that would be your and your husband's three most recent bank statements/payslips. Which I know doesn't apply to you as the applicant, so your husband will need to show that he has income enough for £103 (sorry, I rounded up, it's £102 and some amount of change but can't remember exactly) per week for the two of you after housing payment and council tax. If one has dependents then the requirement is an additional... rounded £53? £58? £59? (sorry, that's another one I'm fuzzy on, but it's definitely in the £50s) per week for each of them. fwiw I have scant savings and no job, my fiance was completely unemployed but £25k savings so we just submitted both of ours and we were fine. I'm not sure if you would need to disclose why you aren't submitting any financial information for yourself, simply stating somewhere in a letter that you do not have a bank account. Maybe someone can clarify this.
I just want to triple check that I have everything as I don't have the money to do this all over again! Here is the list from what I got from the UK Border Agency Settlement Form (VAF4A Dec 2008) Please let me know if I'm missing anything!!
All Applicants;
Previous Passports (I can't submit my previous because I had it shredded as soon as I got my new one 
) In the application there is a paragraph section where you list any previous passports and where they are located. I did not include my previous passport and said that it is at my parents house.
Settlement;
Evidence of the accommodation that you intend to occupy (rental agreement)For someone who is going to be living with someone at their house, or if your sponsor rents, you will need to include a statement from the homeowner or landlord that you have their permission to stay there. We used a letter from his parents, their register of title, and as their mortgage happens to have been paid off, mortgage payoff letter.
Evidence between you and your sponsor (I'm only including screen shots of all the messages sent between me and my husband from when I left the UK in May till now since we're already married and that is pretty much the only way we've been contacting each other except facebook chat and me calling through phone cards, which will not show his number) If you'd feel better to include information about your phone time, I would make a page in the evidence of contact section that you only used phone cards, so this does not allow for evidence of phone contact. As I started gathering my information in March, I was only able to get my phone records until March of 2009, so I explained that records are only available on a rolling 12-month basis, however we'd had regular phone contact since October of the previous year. Again, I tried not to include lots of extra information, but I didn't feel that this added to the workload of the ECO to include. I do wish I'd thought to just use screenshots of my inbox though, I printed out loooads of emails from between December 2008 and September 2009 before I moved to Dubai to be with him.... and even then I included emails after that date, just fewer. I wish I'd known better! I also sent 20 photos, yeesh that was silly of me 
Good luck!!
ETA: Bring a book to the biometrics center, just in case.
ETA2: Pitufina, I wonder if some of my responses to iheartlondonuk might apply to you, at least as a starting point. You will need to get clarification on those numbers - it's somewhere in this thread - but it's definitely £102 and change for you and your sponsor after housing payment and council tax, and (fuzzier) £50-some and change per dependent. Unemployment does not necessarily equal refusal. I don't know about who signs your son's application though, you'll definitely need someone's better advice on that
Good luck to you!
