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みなさん、,こんにちは!
私の名前はフアンです。. I am 16 years old and have started to learn Japanese about 1 weeks ago. I managed to master Hiragana in 1 day and Katana took me about 3 to 4 hours. I have finished learning all the Kanji that first graders learn within their first school year in Japan thanks to the Heisig method. I will be going to J-town in my country in order to surround myself with the language but also to practice it tomorrow. However, by no means does having confidence guarantee that I can maintain a small conversation as I don't know much questions to ask.

たすけてください! (I would say: 私の日本語のべんきょうをてつだってください or 私におしえてください) If you have any suggestions or tips please let me know ASAP

Thank you!/ありがとう!(--> in this case, saying よろしくおねがいします sounds more natural in Japanese.)

How about these web pages? 

aprender japonés para los hispanohablantes

http://www.kira-teachings.com/
Un español enseña japonés en español desde cero hasta la gramática avanzada por sus vídeos por youtube. Su japonés es excelente.
presentación del curso de japonés kizuna
http://m.youtube.com/watch?v=afYI1z9m4m8
frases útiles
http://m.youtube.com/watch?v=6tIPMgY685E
expresiones útiles
http://m.youtube.com/playlist?list=PL5C8BE5DB1D13A780

Kizuna básica lección 1-1
http://m.youtube.com/channel/UCXE2zpwRRfmDCLjOySdFKsQ

Y otras son:
http://www.guidetojapanese.org/spanish/index.html
http://www.nhk.or.jp/lesson/spanish/

Espero que te ayude, ¡mucha suerte!