For sure trusted dealers are the best option, for a reason they are named "trusted" meaning you will get what you ordered, you will have their aftersale support, etc.
For a newbie it is always better to take time and to read before buying. I remember when I discovered this hobby 15 yrs ago it was like for a kid in a candy shop, wanted everything immediately but it takes some time until you understand all the "rules" of the hobby and how it goes. Better to study everything with care and then to proceed with the orders..it can save you a lot of trouble & money!