0 skilled and experienced:
1 skilled and experienced:
2 very skilled and experienced at something:
proficient at sth/doing sth Consumers have become more proficient at shopping online.
proficient in sth The government will help small businesses become proficient in the technologies they need to compete in the digital marketplace.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.