First step is to visit a careers office.
Visit your local careers office or look online.
Go into a career advice office
If you contact Local recruitment office, follow a balanced diet and fitness training, knowledge of the role you would like to progress in you then have the basic requirements at entry level. Recruitment can be found on the internet for further guidence.
Visit local recruitment centre
Apply to the RAF recruiting site
Firstly an online application followed by an airman test to decide which trades you can apply for. Then a interview for you trade to see if you are eligible for that role. Then a medial is needed to see if you are able to join the RAF. Once that is complete a fitness test is done in a local gym to see if you meet the physical standards needed. Then prtc is completed a 3 day course at RAF Halton to get an understanding of military life. An acceptance is next. Then you start your basic training at RAF Halton.
Be squeaky clean, get fit and be some what intelligent.
Apply at the afco
Apply to their nearest Armed forces careers office.