Hi there Crazymeister, welcome aboard Filipino UK
As a very first step please read this thread and follow all the included links to the UKBA site.
All New Guide - How to apply for a Fiance Visa
Also read this and again follow the links - Applying for a UK visa in the Philippines
The UKBA advises all applicants to read their application Guidance Notes together with their Supporting Documents Guidance
You can search here in the forum for any areas/topic of concern or you can ask as many questions as you need right here in your thread.
Oh, and please be sure your Fiancee also fully understand what is needed. This has to be a real team effort for you both.
There's a lot of things to understand.
Take this journey step-by-step, don't be shy to ask as many questions as you want.
There's plenty of folks here who have been down the same road and made that journey. Everyone here is friendly and willing to share experiences, and to make sure to get that special visa.
Some early steps that can be achieved right now (or for you both to consider) is your fiancee being able to meet the English language requirement
Additionally there is a now a requirement for TB Screening before she can submit the application.
Here's the needed detail - Tuberculosis testing in the Philippines
Happy reading...