Tuning your guitar after putting on new strings can be really tricky. New strings don't always stay in tune, which can be frustrating. Here are some common problems and easy solutions:

1. String Stretch: When you put on new strings, they need some time to stretch out. This means they might go out of tune a lot at first.

   • Solution: You can help them by gently pulling the strings away from the fretboard with your fingers.

2. Intonation Issues: Sometimes, your guitar may sound good when you play open strings, but it can still sound off when you play notes further up the neck.

   • Solution: Use a tuner to check the sound at the 12th fret. If it doesn’t sound right, adjust the bridge saddles until it does.

3. Tuning Stability: Changes in the air around you, like humidity and temperature, can make your guitar go out of tune.

   • Solution: Make sure to check your guitar’s tuning often and adjust it if the weather changes.

If you keep trying, you can fix these problems and enjoy playing your guitar much more!