Repairing small things on your own car – I don’t trust myself

Hello to each other, the topic often happened in the past, but people were talking about more than small phrases that I don’t even get dealt with. I have been driving a car for a few years now, now an old Bmw 5er but I still because of almost every little thing in the workshop which is too expensive for me in the long run. I try to narrow down the mistakes as well as possible by hanging myself with my laptop on the OBD socket or google on the Internet after the problem. I often also come to a result but then it usually stops with me. What I get: replacing radio, changing tires, changing air and interior filters as well as illuminants on the main headlight. I know about many components and partly also the functions or at least I have heard of them and know what they look like or where they are. So more theoretician than the practitioner. For example, I recently had a crack in a hose. I had found out where the r Hose sits on the basis of pictures and a part catalog but I did not dare to check the hose because I would have to remove a larger cover, a filter box and 2 other hoses. I am very unsure because I am afraid to damage something, to forget or at the end everything is not assembled anymore. My intention is not to revise my engine, but I also lack the possibilities of some things I would like to do in the future in self-direction du I don’t think that’s too much to ask for and do. Only how do I get there? On the Internet there are instructions or instructions for almost all matters, such as: – change brake pads and perhaps even disks – come to the throttle flap or the LMM (speak clear the way) – remove the door boards and contain – connect the amplifiers and install the cables through the interior – retrofit small things and tap off current from existing cables (electrical exterior mirrors) I think that’s not too much to ask for and do. at least helpful people. Nevertheless, it fails with me because of the implementation and perhaps also because of the basics of the screw. Do you perhaps have tips for a hobby screwdriver who wants to focus exclusively on his car (except for the specific specialist literature that does not help me)?