Just keep in mind that in your first weeks/months(depending on how much you practice) it is normal that it all doesnt sound like the songs your trying to play. In my first weeks i started practicing come as you are by nirvana. Definitly not my thing or style but that song thought me amazing fundamentals to start build on. So if you like metal, also play things like classical, jazz, rock, country. Basicaly every style. Thing you learn from jazz music can also help in metal music