4th Gen So I'm replaying Heartgold

And I have a hoot-hoot and chikorita so far. I have not beaten the first gym yet, but do you guys have any tips for my playthrough? I want to make sure some pokemon don't get too overpowered than my other ones and stuff and I've always had that habit of overpowering my starter or whatever so do you guys have any tips for playing through it? please and thanks!

Just make sure to rotate your team members around. Instead of always using your starter, make it a point to use the other Pokemon on your team. What I like to do when replaying a Pokemon game is go in with some plan to make sure I use different Pokemon than the ones I've used before. There are challenges that help make sure this happens for you, like the Nuzlocke challenge.

But if you don't want to play through an actual challenge, just look through lists of the Pokemon you can catch in each area and see which ones you haven't used before.

HeartGold and SoulSilver are notorious for having one of the steepest leveling curves out of all the Pokémon main series games. I wouldn't worry too much about getting overleveled because it's really difficult to do that in these games--be prepared to do a bit of grinding before you face the Elite Four. Also, I'm not sure if you have any interest in this, but you may want to give the Pokeathlon a try--they're really fun mini-games you can play with your Pokémon that you can get neat prizes from. If you do plan on giving it a try, be sure to collect all the Apricorns you come across, because you need them to level up Pokeathlon stats, and it's helpful to get a head start on collecting them early on, since each tree only yields one Apricorn per day.

Oh, and most important tip: have fun!

thank you guys!! i will be sure to do this c: when do i get to the pokeathlon by the way?

The Pokéathlon is outside Goldenrod City. You have to defeat Whitney first, and then head to Route 35. It's west of the National Park.

Get a pokemon with an ice attack! I recommend catching Lapras on Friday. He learns Ice Beam at level 32. Lance has like 12 Dragonites! Use Lapras!

Other than that do what you wanna do. I like using pokemon I like rather than how good they are. If you want to find a pokemon stronger than your starter you can find Heracross in the tress. He's superpowerful. I remember playing Silver on an emulator and wrecking most of the Elite Four with Heracross' Strength attack. No joke.

Another tip, I don't know if this is the first time you're playing Heart Gold but Whitney can be tough early on. She's the Goldenrod Gym Leader. Another reason to get Heracross, he learns brick break at lvl. 19. Or you could get Nidoran who's north of Goldenrod. He learns Double Kick at level 9.