You can manage & track your card collection and decks once you create an account and login.
In the mean time, Aequitas has a pretty good How to Play
based on WotC's original explanation.
Additionally, Wreck 'N Rule have a lot of great articles, including Deck-Building for Beginners
These are some decks that are good for beginners to learn the game with. They use most of the common mechanics, while avoiding card interactions that might be a bit too much for someone just learning the game.Autobot Starter SetBumblebee Vs. Megatron Starter SetStarter ThunderbeeStarter TimecopStarter StormtriggerStarter BattlechargersStage 3 LockdownAll Spark