Hi RachelWelcome to the forum
You found the right place, this friendly forum would help you find friends and answers with your queries regarding visa applications in the UK.
I was like you when we decided to apply for the visa we are both clueless on which way to start.
First, why don't you take some time to read and review these links to help you and your fiance decide on which route you will both prefer.
http://filipinaroses.com/showthread....-a-Fiance-Visa
http://filipinaroses.com/showthread....e-Partner-Visa
My suggestion to you, start collecting and gathering proofs of your relationship (like: cards, chat logs, mobile texts/call logs pictures of you together, travel receipts etc),documents (like: bank statements, employment certificate, P60, Council tax of your fiance etc.)
If you still have some questions, don't be shy to ask, there are lots of members here in the forum who can help you.
Hope it helps! X
Best regards