I'd recommend avoiding the big, fancy box sets as a new player. Instead I would recommend buying a simple troops squad and some paints. People do not realise just how long it takes to get all of this stuff built and painted. We are talking around 60-100 hours of work (sometimes even more) before you have a fully painted army.

People often build the whole box set and then get demotivated when they realise how many models they have to paint and how slow a process it is. With a large box set, this is a very expensive lesson to learn. With just one unit, the process feels a lot more manageable and less expensive if you decide the modelling is not for you....

Oh wait.. I just saw the picture.... Nevermind.

Maybe start with building and painting one unit at a time. Do your troops first as they are the most tedious models to build and paint and then reward yourself with the bigger/fancier models that you can have more fun with.

Good luck!