We use the present perfect simple:

• For life experience
• For 'how long' with stative verbs and work / live / study
• For recent things with just / yet / already
• For recent things that are completely finished with a present result

We use the present perfect continuous:

• For 'how long' with for and since, except with stative verbs
• For recent things that are not completely finished with a present result
• For continuous actions with a present result

Lesson Summary

The present perfect simple is used for:

• Life experience, referring to things that happened in the past without specifying when, like "I've been to Mexico."
• Expressing duration with stative verbs and verbs like work, live, and study, such as "I've lived here for 10 years."
• Describing recent things using just, yet, and already.
• Discussing recent finished actions with a present result, such as "I've lost my keys, could you help me find them?"

On the other hand, the present perfect continuous is used for:

• Stating duration with for and since, except for stative verbs.
• Referring to recent unfinished actions with a present result, like "I've been waiting here for two hours."
• Denoting continuous actions that have recently stopped but still have a present result, such as "I've been running."