STAR COIN #1: In the beginning of Level One, the third Question Mark Block contains a Power Up.
Continue to a row of Note Blocks where the first Star Coin is sitting right on top of, jump up and grab it. STAR COIN #2: The following rectangular Question Mark Block contains a Fire Flower. Continue to the next stack of colored Blocks. Above this set sits a Brick Block which can turn into a Gold Block when at least ten times. Past the Checkpoint Flag, another row of Note Blocks then appear and a Star Coins is encased in a floating Brick box. Use the Note Blocks below to jump and break to the box and grab the Star Coin. STAR COIN #3: Right before the final set of Note Blocks, you will see a Brick Block and a Green Warp Pipe that will shoot Mario up into the sky and land him in front of the Blue P-switch. Push the button and run along to get all of the Blue, at the end the last Star Coin of the Level will be waiting. Climb the stack of colored Blocks, and try to jump off the Goomba Tower to the Flagpole. STAR COIN #1: Above the Green Warp Pipe is a Koopa enclosed in Brick Blocks, and the first Red POW Block. Hitting the POW Block will destroy the Brick Blocks and overturn the Koopa.
Going down the Warp Pipe, you will automatically pound and hit a POW Block. This level is full of Koopa Troopas and POW Blocks, which breaks empty Brick Blocks, and triggers items like Power Ups.