Greetings! (Greetings - saludos) 

¡ (1) Hola a (2) , todo el mundo! Me llamo Manuel , y soy (3)  estoy nuevo aquí.  i. Por favor, ayu ayúdame con mi español. Espanol. Pienso que es un a idioma bonito. a. Gracias amigos (4) , y que le vaya bien. 

First of all, welcome to Italki. I hope you're going to make a lot of new friends here and you're going to have a great time with us. 

Your exercise is really nice. Here you are my corrections, so you can improve your Spanish: 

1. ¡, ¿, ñ and the accents are so important in Spanish. That's why you need to use the Spanish keyboard.

2. Hola a - Hi/hello to .... (somebody) 

3. I've just explained the difference between ser and estar right here: http://www.italki.com/question/318859 

4. Do not write coma when you want to say " y - and " because one thing is related to another one, so it is not necessary to do that. 

I hope my comment was helpful.

If you have any futher questions, feel free to ask me. I'll be so willing to help you. 

If you need Spanish classes, you can book them right here: http://www.italki.com/teachers/professional 

Have a nice day. 

Greetings!

¡Hola, a todo el mundo! Me llamo Manuel, y estoy soy nuevo aquí. Por favor, ayúdame (o ayúndeme) con mi Español. Pienso que es una idioma bonito. Gracias amigos, y que les vaya bien.