I am a newbie too, and so far I've been reading up a lot on these games and the various strategies that people use. What I have found out so far is that it doesn't really matter which strategy you choose, but it has to work for you and you must stick with it and improve it as you go. Most people lose because they shift from one strategy to another without giving them time to really work.
I take strong exceptions to: "What I have found out so far is that it doesn't really matter which strategy you choose". This a very bad advice.
And: "Most people lose because they shift from one strategy to another without giving them time to really work." This is just plain wrong. Most people lose because you are mathematically supposed to lose! It is a casino game that you are disadvantaged in. You can win long term but you must learn and use card counting to switch the disadvantage to an advantage.
If your intent is to be a recreational player then I suggest you at least familiarize (more appropriately, LEARN) yourself with Basic Strategy. It is the single correct way to play every hand! You will lose less and win more often, but overall you will lose in the long run.
If you are more serious and want to delve into card counting and its associated issues then research carefully, find a mentor and make an informed decision.