i know if you want easy way to gain duel point or dp and exprience point are to duel nova
they get you about 400 and more duel point if you level 40 and more

The best way is to duel Nova of Obelisk Blue. He's the pansy of the game, doing almost
nothing but drawing cards and handing you upwards of 500dp each duel

go to free duel on main screen and tag duel with jinzo if you have him vs jaden + nova or
zane + nova nova makes jaden or zane easy enless they summon their best monster

the above will get you bout 1000dp per duel if you give them 2000 life points at the start
and do a match quick and easy