annuity calculation problem

retirement plan:

I want to get 10,000 at the begining of each year for my traveliing, 4 years


planed to saving 10 years retirement, will used 4 years for travelling

APR 10% for 10 years rate

APR 6% for after retirement

Question:
1. for APR 10%, find out the monthly return?
2. if 10,000 at the beginning of each of the first 4 years for travelling trip.
How much moment i need to saving?
3. find out of the monthly saving amount would ebable myself to achinve my traveliing upon retirement?