OK so first things first, DO NOT PANIC! I know it seems overwhelming but dont get to flustered, there are so many people feeling the same!
So for now here is my advice:
UKCAT: make sure you have booked your UKCAT test. I would personally spend around 2-4 weeks preparing for the exam. Resources include 1000Q book which can be bought online, this is great for starting out and getting used to the question style. I would personally also invest in medify so you can practice your timings in a real exam-like situation, this is also the resource that I (and many others) found is the closest to the real exam. My advice for the UKCAT is do a bit each day, try to improve on your timing and scores and make sure you put more attention onto sections you seem to do worse in. This year the DA section doesnt count so be aware, this will be in the books and practice tests but will not count towards your final score in the exam.
BMAT: The medical schools which use the BMAT include: Keele, Imperial, UCL, Cambridge, Oxford, Leeds, BSMS and Lancaster. Before you decide to sit the BMAT ensure that you have done your research into whether you would make a competative applicant at the BMAT universities. Many people do not choose to do the BMAT, you dont have to if you dont want to apply to any of these medical schools. If you decide you want to sit it there are many resources online to practice, but it isnt sat until novemeber so dont start revising just yet. Also remember with the BMAT you sit is after you have applied to medicine meaning you will not know how you did before applying, making it a risky choice, hence it is recommended you choose no more than 2 BMAT schools to avoid applying to blind.
PS: the structure really differs for so many people, I personally structured it around what I included dependant on the criteria given in university admissions policies. If you go onto universities websites they have criteria which they are looking to be met in the personal statement (a set of bullet points), and it differs slightly dependant on schools. For example my medical schools is below:
Inside the personal statement its worth including your work experience/voluntary work experience and make sure you reflect on these. For example give some things you learnt and a good thing to also do is show how you will act on these by going to medical school (complex to do but when done well is impressive in a personal statement). Also include some extracurriculars to show teamwork, responsibility, extra interestes and a balanced life.
The PS is a strange thing, keep doing drafts and get tutors to review them and work from there.
Other things to do for medicine is once you have any results from the UKCAT and predicted grades/AS grades, try to narrow down your choices of medical schools. The best way to do this is go through each medicals schools admissions policy and see first if you meet the minimum requirements, if you do then go further. if you dont rule it out. Then look at how likely you are to get an interview based on the selections process (this may be found on the admissions documents of the universities website or can usually be found on TSR in older threads), make sure you are applying to places where you are likely to get an interview. For example dont apply to Cardiff with 1A*5Bs and 3Cs at GCSE because you will not get an interview even if you meet the minimum GCSE requirements, so do your research.
After you have a list of medical schools you are likely to get an interview from have a look at the courses, location and university to see what you would like and then make your 4 choices!
If you would like anymore help or advice feel free to PM me on here, I can answer all questions as best as I can x Nat x