Hello and welcome to The COMPLETE Level Walkthrough! Just follow the advice and you'll be blazing through the levels! So, here we go!
Level 0- Difficulty ?- First off, jump up the ledges and on top of the well. Now, bomb- jump up to the platform to the left, and jump up thrice for a secret coin. Now, jump down the well and keep to the LEFT side of it. You should go down a secret passage!
Level 1- Difficulty ?- This could be difficult, depending on how skillfull you are. Count six blocks down (Excluding the thin one above) and two blocks across from the far left (It may be easier to look at a diagram somewhere) Land on the invisible platform there and grab the falling crystals. From here, just jump down into the next level.
More to come!