You have two options at this stage, aknowlegde the claim and inform the court if you intend to defend or setup an arrange to make payment for the outstanding charges. You must reply within 14 days and lodge your defence within 30 days.
Yes, you can get help from online forums like MSE where you can write your defence. However the onus is on you to prepare the documents and send them in time. You may also be required to attend a hearing if you request a hearing.