Learn Spanish (Latin America): Te pido un consejo a ti.

In Spanish, it is very common to use the indirect object pronoun (te) even when you explicitly state who is receiving the action (a ti). The te is required grammatically, while the a ti is optional and used here just to add emphasis.

Why is the verb pido instead of pedo?

Pido comes from the verb pedir (to ask for). It is a stem-changing verb, meaning the e in the stem changes to an i when you conjugate it for the yo (I) form, as well as for most other forms in the present tense.

Could I use a form of preguntar to mean 'ask' in this sentence?

No, because preguntar is only used when you are asking a factual question to get information. When you are requesting an object, a favor, or an action, like asking for advice, you must use pedir.

Why does it say un consejo instead of just consejo?

In English, advice is an uncountable concept, so we say 'a piece of advice' or just 'advice'. In Spanish, consejo is a regular countable noun. So, un consejo literally means 'an advice', which is the natural way to ask for a piece of advice in Spanish.