If you don't have any knowledge of CW (Continuous wawe = telegraphy) you will have to register you to the beginners course. In the contrary case, you will have to choose the registration level proper for your skill. This is done by trying to decode (starting from the minor difficulty level) the characters contained in each available test levels. 
During the decoding you will have to write the received characters, preferably on a squared paper and to groups of five.To ended decoding, if the received characters will correspond to those transmitted you will can :
 1° to decode the superior level ,
 2° to verify the correspondence among the received one and the dictated one,
 3° to pass to a new level ......and so on till to arrive to a level where the received one it will differ from the content of the dictated one.
                                     This level will be that to which you will have to register.

After your registration you will receive an e-mail QTC (Q Code  = Message) with a custom-made lesson. If you shall choose the registration to an higher level instead of that of base (Beginners) you will be sent a dictated that you will have to return for the correction on a suitable sheet. 
If the percentage of errors will result inferior to10 %  you will be admitted to the chosen course level.

Test levels:
Check now your cw skill clicking (and decoding), step by step, from beginners to advanced.