diff --git a/examples/crud/crud.go b/examples/crud/crud.go
index 0d90e2a..6b08ddd 100644
--- a/examples/crud/crud.go
+++ b/examples/crud/crud.go
@@ -9,12 +9,14 @@ import (
 	"github.com/vingarcia/kissorm/nullable"
 )
 
+// User ...
 type User struct {
 	ID   int    `kissorm:"id"`
 	Name string `kissorm:"name"`
 	Age  int    `kissorm:"age"`
 }
 
+// PartialUpdateUser ...
 type PartialUpdateUser struct {
 	ID   int     `kissorm:"id"`
 	Name *string `kissorm:"name"`
diff --git a/mocks.go b/mocks.go
index 664c56b..98431ad 100644
--- a/mocks.go
+++ b/mocks.go
@@ -4,6 +4,7 @@ import "context"
 
 var _ ORMProvider = MockORMProvider{}
 
+// MockORMProvider ...
 type MockORMProvider struct {
 	InsertFn func(ctx context.Context, records ...interface{}) error
 	DeleteFn func(ctx context.Context, ids ...interface{}) error
@@ -17,34 +18,42 @@ type MockORMProvider struct {
 	TransactionFn func(ctx context.Context, fn func(db ORMProvider) error) error
 }
 
+// Insert ...
 func (m MockORMProvider) Insert(ctx context.Context, records ...interface{}) error {
 	return m.InsertFn(ctx, records...)
 }
 
+// Delete ...
 func (m MockORMProvider) Delete(ctx context.Context, ids ...interface{}) error {
 	return m.DeleteFn(ctx, ids...)
 }
 
+// Update ...
 func (m MockORMProvider) Update(ctx context.Context, records ...interface{}) error {
 	return m.UpdateFn(ctx, records...)
 }
 
+// Query ...
 func (m MockORMProvider) Query(ctx context.Context, records interface{}, query string, params ...interface{}) error {
 	return m.QueryFn(ctx, records, query, params...)
 }
 
+// QueryOne ...
 func (m MockORMProvider) QueryOne(ctx context.Context, record interface{}, query string, params ...interface{}) error {
 	return m.QueryOneFn(ctx, record, query, params...)
 }
 
+// QueryChunks ...
 func (m MockORMProvider) QueryChunks(ctx context.Context, parser ChunkParser) error {
 	return m.QueryChunksFn(ctx, parser)
 }
 
+// Exec ...
 func (m MockORMProvider) Exec(ctx context.Context, query string, params ...interface{}) error {
 	return m.ExecFn(ctx, query, params...)
 }
 
+// Transaction ...
 func (m MockORMProvider) Transaction(ctx context.Context, fn func(db ORMProvider) error) error {
 	return m.TransactionFn(ctx, fn)
 }
diff --git a/structs.go b/structs.go
index efadb15..50f0134 100644
--- a/structs.go
+++ b/structs.go
@@ -103,7 +103,7 @@ func FillStructWith(record interface{}, dbRow map[string]interface{}) error {
 	return nil
 }
 
-// This type was created to make it easier
+// PtrConverter was created to make it easier
 // to handle conversion between ptr and non ptr types, e.g.:
 //
 // - *type to *type
@@ -117,6 +117,13 @@ type PtrConverter struct {
 	ElemValue reflect.Value
 }
 
+// NewPtrConverter instantiates a PtrConverter from
+// an empty interface.
+//
+// The input argument can be of any type, but
+// if it is a pointer then its Elem() will be
+// used as source value for the PtrConverter.Convert()
+// method.
 func NewPtrConverter(v interface{}) PtrConverter {
 	if v == nil {
 		// This is necessary so that reflect.ValueOf
@@ -141,6 +148,8 @@ func NewPtrConverter(v interface{}) PtrConverter {
 	}
 }
 
+// Convert attempts to convert the ElemValue to the destType received
+// as argument and then returns the converted reflect.Value or an error
 func (p PtrConverter) Convert(destType reflect.Type) (reflect.Value, error) {
 	destElemType := destType
 	if destType.Kind() == reflect.Ptr {