Identify the early start, early finish, late start late finish for each

Using the following information:
Build a network diagram
Identify the early start, early finish, late start late finish for each activity
Identify the critical path
Identify the duration of the critical path
What is the float of Activity B
What is the float of Activity H
Activity Predecessor Duration in Days
A Start 3
B Start 6
c A, B 12
D B 5
E D 4
F C 6
G E,F 8
H E 7
I H 3