I'm new to bootstrap and I was wondering if anyone could help me with covering my form I created below to bootstrap 4?

I'm new to bootstrap and I was wondering if anyone could help me with covering my form I created below to bootstrap 4? I was also wondering if someone could link me some documentation which explains more about building bootstrap 4 forms.
 

<form action="test.php" method="post">

         <table>

            <tr>

               <td align="right">First name: </td>

               <td><input size="20" type="text"  maxlength="15" name="firstname"></td>

            </tr>

            <tr>

               <td align="right">Last name: </td>

               <td><input size="20" type="text"  maxlength="15" name="lastname"></td>

            </tr>

            <tr>

               <td align="right">Address line 1: </td>

               <td><input size="30" type="text"  maxlength="50" name="address01"></td>

            </tr>

            <tr>

               <td align="right">Address line 2: </td>

               <td><input size="30" type="text"  maxlength="50" name="address02"></td>

            </tr>

            <tr>

               <td align="right">Town / city: </td>

               <td><input size="20" type="text"  maxlength="20" name="town"></td>

            </tr>

            <tr>

               <td align="right">Post code: </td>

               <td><input size="10" type="text"  maxlength="10" name="postcode"></td>

            </tr>

            <tr>

               <td align="right">Telephone: </td>

               <td><input size="15" type="text" size="20" maxlength="15" name="telephone"></td>

            </tr>

            <tr>

               <td align="right">E-mail: </td>

               <td><input size="50" type="text"  maxlength="50" name="email"></td>

            </tr>

            <tr>

               <td> </td>

               <td colspan="2" align="left"><input type="submit" value="Submit"></td>

            </tr>

         </table>

      </form>