Help with mysql query statements

I need help to write a small number of mysql query statements to access one database table, get the sum of some values for each user, then place that total in another table. ## Deliverables I have a two database tables. 1 database table is called: #_points_total It has the following fields: user_id, point I have another table called: #_points_monthly_total It has the following fields: user_id, jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec, year_total, average_activity_points_per_month I need to have the correct mysql query statement to collect all of the points totals for "point" for "user_id" for each month in table #_points_total. A small cron script would be needed to place these query statements to update the #_points_monthly_total table each month. The field "year_total" is the sum of all fields 'jan','feb','mar'.... etc The field "average_activity_points_per_month" must calculate the 'average' of points based on a monthly average calculated using the 12 month period.