Between or among? When we must use "between" and when, instead, "among"?

presentation Hi I'm Gabriele, I'm an office worker, I love to travel and it's absoulutely essential to know english very well. My mian difficult in learning is to speak! I understand quite well but I have some problem when I have to speak.

Help for my dinner Hi, what do you think I could cook with a celery, some carrots, two tomatoes and some "pasta"???

there is no one who wants to speak Italian and English ? <pre dir="ltr" data-fulltext="" class="tw-data-text vk_txt tw-ta tw-text-small" data-placeholder="Traduzione" id="tw-target-text" style="text-align: left; height: 96px;">hello , if you want I can help you with italian, in exchange you could help me improve my English .</pre><pre dir="ltr" data-fulltext="" class="tw-data-text vk_txt tw-ta tw-text-small" data-placeholder="Traduzione" id="tw-target-text" style="text-align: left; height: 96px;">
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English for Italian Hi, I need to find a language partner to improve my english, also using skype; I can learn you Italian. We could speaks about