Install the steam app on your phone so you can browse them easily and add as many games that you want to your wishlist. Also, you can visit isthereanydeal.com to find discounts from other websites other than steam. Another tip: Visit steamdb.info to find the lowest price history for each game.
I bought 3: dark souls 3, kena , and a space for the unbound. Dark Souls 3 is the one I will be playing the most. The other 2 are for my sister.