Been hiking for years and I've watched dozens of friends make the same mistakes when they start out. Here's the cheat sheet I wish someone gave me:

1. Cotton everything. Cotton absorbs sweat, stays wet, and will make you miserable. Switch to merino wool or synthetic base layers. Even a $15 polyester shirt from Target beats a $60 cotton flannel on the trail.

2. Buying boots that are "close enough." Your feet swell when you hike. Go a half-size up. Try them on at the end of the day when your feet are biggest. This alone prevents 90% of blister problems.

3. Overpacking. You don't need 3 changes of clothes for a day hike. You need water, snacks, a first aid kit, rain layer, and navigation. That's it. A 20L daypack should cover most beginner trips.

4. Cheap rain gear. A $20 poncho from Amazon will rip the first time you brush against a branch. Spend $60-80 on a proper rain jacket — it'll last years and actually keep you dry.

5. Skipping the headlamp. "I'll be back before dark." Famous last words. A headlamp weighs 3oz and costs $20. Just bring one. Always.

At Summit Supply Co. we put together detailed gear guides every week for people who want to start hiking without burning money on the wrong stuff. If any of this resonated, come check us out.