A two-week beginner plan

Ten to fifteen minutes a day is enough.

Days 1 to 3: Learn the home row and finger positions. Type simple home row words slowly.
Days 4 to 7: Add the top and bottom rows one at a time. Keep accuracy high.
Days 8 to 10: Type short, familiar words at a relaxed pace.
Days 11 to 14: Raise the pace a little each day. Try a Blitz run to test yourself.

Keep it fun. A game like Zomtype makes daily practice easier to stick with.