Don't Panic.
When it comes to building armour there are multiple levels of building from different manufacturers from beginner to expert. No matter what you choose these are only so many variations on how to build armour. the main thing is time. This is unlimited. you can take as long as you want to build it. My recent 1/32 Avro Lancaster took 3 months!
At this moment I am sort of on my bench and not on my bench as I am easing myself back from an illness over Christmas and New Year which has totally worn me out and took some very large Penicillin tablets to help me overcome a nasty chest infection and then there was some other things on the top of that.
I am also having a declutter and being run ragged by a ladyfriend into getting my life back in order!
I am just launching into Airfix's 1/24 Hellcat (2 of them) and once those are done I will be coming back to the dark side.
I am very tempted after reading this thread and contributing to it to actually do a step by step build and going into depth on my own building and painting techniques as there seems to be quite a few beginners coming onto the forums.
I don't do videos, but my photographs are very clear and concise and if you look at some of my build posts then you will get the idea of what a high end armour kit has in it and what it takes to build them.
Rule 1. Familiarise yourself with the parts and the instructions. Read them over and over until you understand the parts, the instructions and the aim of the build.
Rule 2. If there are multiple variants in the instructions then pick one right at the beginning and STICK TO IT. You can cross out parts of other variants in the instruction book as you won't need them and it will cause less confusion.
Rule 3. Make a plan on how you want to build the kit. Factor in some flexibility and use the instruction book as a guide.
Rule 4. Gather everything you will need, paints glue, sharp knives, first aid kit etc. Be prepared for anything!
Rule 5. Use the internet. Ask questions, research the subject, read reviews of the kit etc. Nobody on these forums will yell at you for asking a question.
Rule 6. When starting a section, you have to totally know and understand what you have to do. Dry fit 5 times so you understand just how the parts go on and then glue once.
Rule 7. this is where the time comes in. Don't try and do too much at once. If you still have a problem with what goes where, how or why then take photos and post!
Rule 8. Every kit, subject and genre has a learning curve and this is how you get experience.
RFM are quality kits and will give you a really good build experience. they are expensive and I wouldn't really have recommended it to a first timer. Still, saying that, you will learn a lot from going through this build and there are many people here that will help and provide pearls of wisdom and so don't be afraid to ask. With this kit, it will be about the journey you make and what you learn, NOT the mistakes you make on the way... that's part of the learning experience.
Hint: if It doesn't look like the instructions when you build a bit then it is usually wrong. Don't Panic! look at the drawings a couple of steps ahead as the assembled bit you are struggling with will be shown in the instruction step in place and then a lightbulb will go on in the head.
Getting frustrated? Go and put the kettle on. It is not going anywhere is the kit. You will probably get a lightbulb moment too!