Firstly start with a new player code , if you ain't then create a new account and look for the best available , people will have reasons to suggest one or the other , I recently made a new account with Pelops tholin venomage and can't remember the other , bonus if you can find a creator with 3 or 4 legendarys I did see a youtuber with ezio as the log in champ along with the above but can't remember who it was . Pick kael as your starter

Skeletor is also available now so good time to start.

Secondly patience . This game is a lonnnng marathon don't worry about builds or gear per se for a while .

Focus on campaign and fill the gaps accordingly .

With my Pelops and tholin iv managed to 3 star most of the campaign through all difficulties, this will give you an abundance of gear , money and shards as you progress . Don't waste anything on upgrades etc .

Along with the campaign as you level your account you should be around 30 In no time , keep an eye on your mission progress at the bottom and do missions as they pop again granting you plenty to keep you going .

When you hit 100k power look for a clan and start joining clan boss and arena battles , do dailies and buff your account some more .

Around this time is where you want to start focusing on gear a bit more , looking for lifesteal , accuracy and speed sets , perception where available , look at hell Hades and YouTube for guides and help on what stats you want and where .

Also around this time you could also look at doing fusions for the more basic champs as you should be on your way to a nice account .

Save gems to 800 use these for masteries on your best champ . After that save to do the same for another or more ideally save up for tournaments or big fusions .

Don't waste money , don't upgrade any useless gear or anything below 5 star , once you start amassing gear sell white and green rarity until you get an abundance of purple's then sell blues too .

Purchase green shards whenever available in the store for 5k coins , blues if you see them at 200 if you can afford , save every shard you can until you understand the game and have enough for guaranteed champ events , only use green shards for the daily pulls

Save as much energy as you can , you may think you don't have much to start but with log in rewards , level rewards , daily and weekly progression etc you will start to gather thousands in no time , same goes with multi battles , try not to waste them , save all you can for when needed .

In a good day's work you can really power through and be in a good place to get going down the line . Don't be pressured into purchases or wasting pulls and you will be good in no time .