Hi. I'll be staying at Happy Dragon Hostel at Wangfujing.

You can take Airport Express and transfer to Metro Line 2 at Dongzhimen, and then change to line 6 at Chaoyangmen. Get off at Dongsi and leave from Exit E, walk west for about 3 minutes and turn north. Walk north for about 5 minutes to your hotel. It takes about 1h and CNY31.

How bout taking taxi from airport to Happy Dragon? How much does it cost and how long?
Thank you in advanve

Well, it takes about 40mins and CNY80-90.

I've been staying in Happy Dragon. It is easy reach by subway. From the subway station, you go to Exit E, then at the outside, turn right and walk for about 100m until you see a telephone booth with sigh Happy Dragon Hostel. There is a door and construction at the right, go inside and then walk for 100m and you will see the hostel