find a c/c++ tutor

i want to implement an dictionay without vector like sdl. I am a python programmer. I want to find someone can teach me some c/c++, memory management. some code i found online is this： class Node{ public: //vector<Node*> next; Node* next [26]; bool isWord; Node(){ isWord = false; //next = vector<Node*>(26, NULL); Node *next = new Node[26]; } }; class Trie{ private: Node* root; public: Trie(){ root = new Node(); } void insert(string s){ Node* cur = root; for(char c: s){ if(cur->next[c - 'a'] == NULL) cur->next[c - 'a'] = new Node(); cur = cur->next[c - 'a']; } cur->isWord = true; } bool find(string s){ Node* cur = root; for(char c: s){ if(cur->next[c - 'a'] == NULL) return false; cur = cur->next[c - 'a']; } return cur->isWord; } }; class MagicDictionary { public: /** Initialize your data structure here. */ MagicDictionary() { trie = new Trie(); } /** Build a dictionary through a list of words */ void buildDict(vector<string> dict) { for(string s: dict){ trie->insert(s); } } /** Returns if there is any word in the trie that equals to the given word after modifying exactly one character */ bool search(string word) { // for(int i = 0; i < [login to view URL](); i++){ // for(int j = 0; j < 26; j++){ // char c = j + 'a'; // if(c == word[i]) continue; // char oriChar = word[i]; // word[i] = c; // if(trie->find(word)) // return true; // word[i] = oriChar; // } // } return false; } private: Trie* trie; };